JPS6186134A - Wire electric spark machine - Google Patents
Wire electric spark machineInfo
- Publication number
- JPS6186134A JPS6186134A JP20698884A JP20698884A JPS6186134A JP S6186134 A JPS6186134 A JP S6186134A JP 20698884 A JP20698884 A JP 20698884A JP 20698884 A JP20698884 A JP 20698884A JP S6186134 A JPS6186134 A JP S6186134A
- Authority
- JP
- Japan
- Prior art keywords
- brake
- wire
- electrode
- powder
- wire electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/02—Wire-cutting
- B23H7/08—Wire electrodes
- B23H7/10—Supporting, winding or electrical connection of wire-electrode
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明はワイヤ放電加工装置、特にワイヤ電極の張力
を制御するパウダブレーキのブレーキ力の変動防止に関
するものである・
〔従来の技術〕
第2図はワイヤ放電加工装置のワイヤ電極の配線経路を
示す構成図であシ、図において(1)はワイヤ電極、(
2)はワイヤ電極(1)を供給するワイヤ供給ボビン、
(3)はワイヤ供給ボビン(2)から送られるワイヤ電
極(1)の張力を制御するパウダーブレーキ、(4)は
ワイヤ送りモータ、(5)は不図示のXYジクロステー
ブル上載置された被加工物、(6)はダンパーローラー
、(7) 、 (8) 、α0 、 (ISlはプーリ
ー、(9)はワイヤ押え、(1υ、α尋は給電ダイス、
(121、Hにダイスガイド、αeはピンチローラ−で
ある。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a wire electrical discharge machining device, particularly to preventing fluctuations in the braking force of a powder brake that controls the tension of a wire electrode. [Prior Art] Second The figure is a configuration diagram showing the wiring route of the wire electrode of a wire electrical discharge machining device. In the figure, (1) is the wire electrode, (
2) is a wire supply bobbin that supplies the wire electrode (1);
(3) is a powder brake that controls the tension of the wire electrode (1) sent from the wire supply bobbin (2), (4) is the wire feed motor, and (5) is the object placed on the XY dicross table (not shown). Workpiece, (6) is a damper roller, (7), (8), α0, (ISl is a pulley, (9) is a wire holder, (1υ, α fathom is a power supply die,
(121, H is a die guide, αe is a pinch roller.
従来のワイヤ放電加工装置は上記のように構成され、ワ
イヤ電極(1)はワイヤ供給ボビン(2)よシ各プーリ
ーを経て、パウダーブレーキ(3)とワイヤ送りモータ
ー(4)によシ被加工物(5)とワイヤ電極(1)との
直交する部分の所定のワイヤ張力を作シ、ワイヤ電極(
1)と被加工物(5)間に加工液を噴流し、ワイヤ電極
(1)と被加工物(5)との間に電圧を印加して、両者
間に放電を発生させ放電切断加工を行なう。A conventional wire electrical discharge machining device is configured as described above, and the wire electrode (1) is passed through the wire supply bobbin (2), each pulley, and then transferred to the powder brake (3) and wire feed motor (4) to be machined. Create a predetermined wire tension at the orthogonal part of the object (5) and the wire electrode (1).
1) and the workpiece (5), a voltage is applied between the wire electrode (1) and the workpiece (5), and electrical discharge is generated between the two to perform electrical discharge cutting. Let's do it.
上記パウダーブレーキ(3)とワイヤ送りモーター(4
)によシ作る所定のワイヤ電極(1)の張力の制御回路
のブロック図を第6図に示す。(17)はパウダーブレ
ーキ(3)に内蔵する励磁コイルに通電する電流を制御
する電流制御回路、αのはこの電流値を可変してパウダ
ーブレーキ(3)のブレーキ力の強弱を可変する例えば
1〜12ノツチの切換スイッチである。The above powder brake (3) and wire feed motor (4)
) A block diagram of a control circuit for controlling the tension of a predetermined wire electrode (1) is shown in FIG. (17) is a current control circuit that controls the current flowing to the excitation coil built in the powder brake (3), and α is a current control circuit that controls the current value to vary the strength of the braking force of the powder brake (3).For example, 1 It is a 12-notch changeover switch.
ワイヤ電極(1)の所定張力の発生は、切換スイッチα
υを手動で所定のノツチに合せたのち、ワイヤ送υON
信号をNC制御装置(不図示)に入力することによシミ
流制御回路αDを働らかせて、パウダーブレーキ(3)
に所定のブレーキ力を与えて行なうO
放電切断加工において、ワイヤ電極の張力を強くするこ
とによシ加工速度の向上及び切断加工面精度の向上を図
ることができるが、その反面ワイヤ電極(1)が切れ易
くなシ、放電が不安定になシ易くなる。したがってワイ
ヤ電極(1)の張力の選定は重要で直接加工性能に影響
を与える。Generation of a predetermined tension on the wire electrode (1) is performed using the changeover switch α.
After manually adjusting υ to the specified notch, turn on the wire feed υ.
By inputting a signal to the NC control device (not shown), the stain flow control circuit αD is operated, and the powder brake (3) is activated.
In electrical discharge cutting, the machining speed and precision of the cut surface can be improved by increasing the tension of the wire electrode. ) are likely to break, and the discharge becomes unstable. Therefore, selection of the tension of the wire electrode (1) is important and directly affects processing performance.
上記のような従来のワイヤ放電加工装置では、ワイヤ電
極(1)の張力を制御するパウダーブレーキ(3)は電
磁ブレーキであり、励磁コイルに電流を流さない場合は
内部のパウダー(粉体)の状態が片寄ったり、湿気を吸
収し易くなシ、電流を流した当初のトルク特性のバラツ
キが大きくなシネ安定になる。このためワイヤ電極(1
)の張力の変動が太きくなシ、放電切断加工の加工速度
、加工精度が変動し、加工が不安定となる問題点かあっ
た。In the conventional wire electrical discharge machining device as described above, the powder brake (3) that controls the tension of the wire electrode (1) is an electromagnetic brake, and when no current is applied to the excitation coil, the internal powder is If the condition is unbalanced or moisture is easily absorbed, the torque characteristics may vary greatly when the current is applied, resulting in a stable cine. For this reason, the wire electrode (1
), the machining speed and machining accuracy of electrical discharge cutting machining fluctuated, resulting in unstable machining.
この発明は、かかる問題点を解決するためになされたも
ので、ワイヤ送り時以外でもパウダブレーキ本体の湿気
を防止し、かつ内部パウダーの均一化によるワイヤ電極
の張力のバラツキを減少させ、安定した放電切断加工を
行なうことができるワイヤ放電加工装置を得ることを目
的とする。This invention was made to solve these problems, and it prevents moisture in the powder brake body even when the wire is not being fed, and also reduces variations in the tension of the wire electrode by making the internal powder uniform. An object of the present invention is to obtain a wire electrical discharge machining device capable of performing electrical discharge cutting.
この発明のワイヤ放電加工装置は、ワイヤ電極の張力を
制御するパウダーブレーキに、ワイヤ送り中以外にブレ
ーキ力が最大となる電流を流すようにしたものである。In the wire electrical discharge machining apparatus of the present invention, a current is applied to the powder brake that controls the tension of the wire electrode so that the braking force becomes maximum at times other than when the wire is being fed.
この発明においては、ワイヤ送り中以外においてもパウ
ダーブレーキ本体の湿気を防止することができ、かつ内
部パウダーの状態の均一化を図ることができるから、ワ
イヤ送り開始の際のワイヤ電極のブレーキ力の変動を防
止することができるO〔実施例〕
第1図はこの発明の一実施例のパウダーブレーキ制御回
路のブロック図であシ、図において(3)。In this invention, it is possible to prevent moisture in the powder brake body even when the wire is not being fed, and the state of the internal powder can be made uniform, so that the braking force of the wire electrode when starting wire feeding can be reduced. Fluctuations can be prevented [Embodiment] FIG. 1 is a block diagram of a powder brake control circuit according to an embodiment of the present invention, (3) in the figure.
tin 、 Qaは上記従来装置と同一部分を示す。(
イ)はNC制御装置内のメモリであシ、紙テープ翰から
入力する制御プログラムを記憶し、電流制御回路αDに
出力する。tin and Qa indicate the same parts as the above conventional device. (
A) The memory in the NC control device stores the control program input from the paper tape and outputs it to the current control circuit αD.
メモリ四に記憶された制御プログラムはワイヤ送り信号
が08時以外にも電流制御回路αηを動作させるように
働き、その時のパウダーブレーキ(3)に流す電流値は
切換スイッチ(18の最大ノツチに和風
轟する電流値に制御する。すなわち最大電流)・ウダー
ブレーキ(3)に流れるように自動的に制御する。The control program stored in memory 4 works to operate the current control circuit αη even when the wire feed signal is not at 08:00, and the current value flowing to the powder brake (3) at that time is set by the changeover switch (Japanese style at the maximum notch of 18). The current is controlled to a roaring current value (in other words, the maximum current) and is automatically controlled so that it flows to the muddy brake (3).
またワイヤ送り信号が08時には、従来と同様に切換ス
イッチaυで設定した電流がパウダーブレーキ(3)に
流れるようにii制御する。Further, when the wire feed signal is 08:00, control is performed so that the current set by the changeover switch aυ flows to the powder brake (3) as in the conventional case.
上記のように構成したワイヤ放電加工装置においてはワ
イヤ電極(1)の送り時以外にはパウダーブレーキ(3
)にブレーキ力が最大となる電流を流し、ワイヤ電極(
3)の送り時には所定のブレーキ力が働く電流を流すこ
とによシ、ワイヤ電極(3)の張力を所定の値に制御す
る。したがってワイヤ電極(1)の送り時以外にパウダ
ーブレーキ(3)内のパウダーの状態かた。えず均一化
され、かつ湿気が防止されているため、ワイヤ電極(3
)の送)開始に際してもパウダーブレーキ(3)のブレ
ーキ力の変動を容易におさえることができる。In the wire electrical discharge machining apparatus configured as described above, a powder brake (3
), apply a current that maximizes the braking force to the wire electrode (
During feeding in step 3), the tension of the wire electrode (3) is controlled to a predetermined value by flowing a current that produces a predetermined braking force. Therefore, the condition of the powder in the powder brake (3) changes when the wire electrode (1) is not being fed. The wire electrode (3
) It is possible to easily suppress fluctuations in the braking force of the powder brake (3) even at the start of the powder brake (3).
なおワイヤ電極(1)を第2図に示すように配線するの
はワイヤ電極の送り停止時であり、このときにパウダー
ブレーキ(3)には最大電流が流れておシ、ブレーキ力
は最大になっているため、配線がしづらいということも
考えられる。そこでワイヤ電極(1)を配線する次めの
入力信号をNC制御装置に入力することにより、ワイヤ
電極(1)を配線する時間例えば10分程度、電流制御
回路(17)によシ切換スイッチ壬ア最小電流がパウダ
ーブレーキ(3)に流れるように、NC制御装置内のメ
モリ翰に制御プログラムを記憶しておけばワイヤ電極(
1)配線時のパウダーブレーキ(3)のブレーキ力の制
御が可能になる。The wire electrode (1) is wired as shown in Figure 2 when the wire electrode is stopped feeding, and at this time the maximum current flows through the powder brake (3) and the braking force is at its maximum. It is also possible that wiring is difficult because of this. Therefore, by inputting the next input signal for wiring the wire electrode (1) to the NC control device, the time for wiring the wire electrode (1), for example, about 10 minutes, is changed to the current control circuit (17). If a control program is stored in the memory in the NC control device so that the minimum current flows to the powder brake (3), the wire electrode (
1) It becomes possible to control the braking force of the powder brake (3) during wiring.
この発明は以上説明したようにパウダーブレーキのブレ
ーキ力の変動を防止することによシワイヤ電極の張力の
変動を少なくすることから、ワイヤ放電加工装置の切断
加工の加工速度、加工精度を安定にする効果がある。As explained above, this invention reduces fluctuations in the tension of the shear wire electrode by preventing fluctuations in the braking force of the powder brake, thereby stabilizing the machining speed and machining accuracy of cutting with a wire electrical discharge machining device. effective.
第1図はこの発明の実施例に係るパウダーブレーキ制御
回路のブロック図、第2図はワイヤ放電加工装置のワイ
ヤ電極配線経路を示す構成図、第6図は従来のパウダー
ブレーキ制御回路のブロック図である。
(1)・・・ワイヤ電極、(2)・・・ワイヤ供給ボビ
ン、(3)・・・パウダーブレーキ、(4)・・・ワイ
ヤ送りモータ、(5)・・・被加工物、(6)・・・ダ
ンパーローラー、(7) 、 (8) 、αQ。
a9・・・プーリー、(9)・・・ワイヤ押え、αυ、
αく・・・給電ダイス、(13、(13・・・ダイスガ
イド、αe・・・ピンチローラ−1住η・・・電流制御
回路、鱈・・・切換スイッチ、翰・・・メモリ。
なお、各図中同一符号は同一または相当部分を示すO
代理人 弁理士 木 村 三 朗
第1図
第2図
i。Fig. 1 is a block diagram of a powder brake control circuit according to an embodiment of the present invention, Fig. 2 is a configuration diagram showing a wire electrode wiring route of a wire electric discharge machining device, and Fig. 6 is a block diagram of a conventional powder brake control circuit. It is. (1)...Wire electrode, (2)...Wire supply bobbin, (3)...Powder brake, (4)...Wire feed motor, (5)...Workpiece, (6 )...damper roller, (7), (8), αQ. a9...Pulley, (9)...Wire holder, αυ,
αku...power supply die, (13, (13...dice guide, αe...pinch roller-1 housing η...current control circuit, cod...changeover switch, wire...memory. , The same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
上に被加工物を載置し、この被加工物にZ軸方向に所定
の張力で移動するワイヤ電極を直交させ、上記ワイヤ電
極と被加工物間に電圧を印加して放電を発生させながら
被加工物を移動させ被加工物を所望の形状に切断加工す
るワイヤ放電加工装置において、ワイヤ電極の張力を制
御するパウダーブレーキに、ワイヤ送り中以外にブレー
キ力が最大となる電流を流すようにしたことを特徴とす
るワイヤ放電加工装置。A workpiece is placed on an XY cross table that moves forward and backward in the X-axis direction and the Y-axis direction, and a wire electrode that moves in the Z-axis direction with a predetermined tension is orthogonally crossed to this workpiece. In wire electrical discharge machining equipment, which cuts the workpiece into a desired shape by applying a voltage between the workpieces and moving the workpiece while generating an electric discharge, wire feeding is used to control the tension of the wire electrode. A wire electrical discharge machining device characterized in that a current that maximizes braking force is passed through a portion other than the inside.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20698884A JPS6186134A (en) | 1984-10-04 | 1984-10-04 | Wire electric spark machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20698884A JPS6186134A (en) | 1984-10-04 | 1984-10-04 | Wire electric spark machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6186134A true JPS6186134A (en) | 1986-05-01 |
Family
ID=16532319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20698884A Pending JPS6186134A (en) | 1984-10-04 | 1984-10-04 | Wire electric spark machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6186134A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63144127U (en) * | 1987-03-11 | 1988-09-22 |
-
1984
- 1984-10-04 JP JP20698884A patent/JPS6186134A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63144127U (en) * | 1987-03-11 | 1988-09-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7364358B2 (en) | Wire electrical discharge machine and wire electrical discharge machining method | |
JPS6186134A (en) | Wire electric spark machine | |
JPH05154717A (en) | Wire electric discharge machining method and device thereof | |
KR890011666A (en) | Wire EDM | |
US5083000A (en) | Wire cut type electric discharge machining method and apparatus | |
EP0657241B1 (en) | Wire-cut electrical discharge machine | |
JPH0760551A (en) | Wire cut electric discharge machine | |
JPS61146419A (en) | Electric discharge machine | |
JPS6351809B2 (en) | ||
JPH08155744A (en) | Wire electric discharge machining method | |
JPH079261A (en) | Method and device for wire electric discharge machining | |
JPH07148621A (en) | Wire electrode tension control device | |
JPS59152022A (en) | Method for controlling wire electrode tension | |
JPS6161711A (en) | Power source for electric discharge machining | |
JP3404119B2 (en) | Wire electric discharge machining method and apparatus | |
JP2741860B2 (en) | Control device for wire electric discharge machine | |
JP2000141133A (en) | Wire electric discharge machine | |
JPS61236427A (en) | Wire cut electric discharge machine | |
JPS5796727A (en) | Wirecut electric discharge machining device | |
JPS5929370B2 (en) | Current-carrying wire cutting device | |
JPH0512091B2 (en) | ||
JPH04289026A (en) | Short circuit releasing method for wire cut electric discharge machine | |
JPH05277832A (en) | Electric discharge machining method and its device | |
SU552175A1 (en) | Device for adaptive machine control | |
JPH0321267B2 (en) |